Escutcheon



FIG. 1 is a perspective view of the new design for an escutcheon;

FIG. 2 is a bottom plan view of the new design for an escutcheon;

FIG. 3 is a top plan view of the new design for an escutcheon;

FIG. 4 is a right side elevational view of the new design for an escutcheon; and,

FIG. 5 is a front elevational view of the new design for an escutcheon.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an escutcheon, as shown and described. 